Jefferson's Hats

Jefferson's Hats are magical items featured on ABC's Once Upon a Time. They are magical hats created by Jefferson, which are capable of transporting people from one realm to another, as long as the realm has magic. However, the same amount of people who go into the hat, must come out of the hat. One of the hats are eventually burned and destroyed by George. However, working replicas of the hat still remain in existence.

Worlds

When one went inside the hat, they come to a room with many doors on the walls. Each door leads to a different realm.